Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Educators · Matched Filter

Matched Filter for a battery pack

Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a battery pack live below — adjust the inputs and watch it respond, right in your browser.

Matched FilterLive

pulling signal out of noise

Controls

Presets

Noise level

Pulse position

A matched filter correlates a received signal with a known template, concentrating the pulse energy into a single sharp peak while averaging noise away. It gives the best possible detection in white noise — the core of radar, sonar, and GPS. Educational tool.

▶ Run in Python

Data Inspector

Detected position0.56 × length

Detectionpulse found ✓

Governing equation

h (t) = s (T - t), y (t) = \int x (τ) s (τ - t) d τ, \hat{t} = 0.56 T

Reading this result: The pulse is buried, but correlation adds its energy coherently while random noise averages toward zero — the peak still clears the detection threshold.

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Also for:Students Researchers Engineers Hobbyists & Makers K-12 Students First Responders General version →

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Frequently asked questions

Is this good for educators?: Yes — this version of "Matched Filter for a battery pack" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.